Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper.
Toss the cubed eggplant, sliced zucchini, and chopped red bell pepper with half of the olive oil and a pinch of sea salt.
Spread the vegetables in a single layer and roast for 20 minutes until they are tender and slightly caramelized.
While the vegetables roast, heat the remaining olive oil in a large skillet over medium-high heat.
Season the chicken breast pieces with sea salt and black pepper, then sear in the skillet until golden brown and cooked through.
Remove the chicken from the skillet and set aside on a plate.
In the same skillet, sauté the diced yellow onion and minced garlic until they are translucent and aromatic.
Stir in the tomato puree, dried thyme, and dried oregano, allowing the sauce to simmer for 5 minutes.
Fold the roasted vegetables and seared chicken back into the skillet, stirring gently to combine and heat through.
Garnish the dish with fresh torn basil and serve immediately while hot.